no "else" statement

#include <EEPROM.h>

volatile byte e101 = LOW;
volatile byte e102 = LOW;
int error = 0;

void setup() {
  pinMode(13, OUTPUT);      // random line
  pinMode(12, INPUT);       // random line

  for (int address = 0; address < 1; address++) {
    if (EEPROM.read(address) == 0xff) {
      EEPROM.write(address, LOW);
    }                                               // no "else" here...

    if (EEPROM.read(address) != LOW) {
      error = 1;
    } else {
      error = 0;
    }
  }

  Serial.begin(9600);
}

void function1() {
  // do something

  // in case unexpected shit happens
  e101 == HIGH;
  EEPROM.update(0, e101);
  error = 1;
}

void function2() {
  // do something

  // some other unexpected action
  e102 == HIGH;
  EEPROM.update(1, e102);
  error = 1;
}

void loop () {
  if (error == 1) {
    // run the main loop
  } else {
    // do NOT run the main loop
  }
}